CVE-2023-50782

Python-cryptography: bleichenbacher timing oracle attack against rsa decryption - incomplete fix for cve-2020-25659

HIGH
7.5
CVSS Score
Published: February 5, 2024 at 08:45 PM UTC
Updated: June 17, 2026 at 06:39 AM UTC
6 products affected across 4 vendorsEnterprise LinuxAnsible Automation PlatformCouchbase Server

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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
PoC

Description

A flaw was found in the python-cryptography package. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 42.0.0
Affected range stops below 42.0.0, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 2 (unaffected)
Vendor states this is fixed in 8 (unaffected)
Vendor states this is fixed in 9 (unaffected)
Vendor states this is fixed in 7 (unknown)
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

VDB Entryx_refsource_REDHATVendor Advisory
https://access.redhat.com/security/cve/CVE-2023-50782
Issue Trackingx_refsource_REDHATVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2254432
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.couchbase.com/alerts/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-208CWE-203CWE-385

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